Am studying on purchases and sales modules and our company deals with both USD and LKR. The base currency is LKR. i want to purchase in USD and Sales in LKR. I can do purchases in USD by selecting CASH(USD)/BANK(USD) as payment method. But in sales, when i do Payment registration, payment method shows CASH(USD)/BANK(USD) and a 'Unknown'. how can i remove this unknown and make CASH(LKR)/BANK(LKR) in Sales without affecting to CASH(USD)/BANK(USD) in Purchases. (cz when i change either side, it will affect to the other)